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A New Ultrasound Elastography Method Based on a Variable Windows‑Based Numerical Optimization Algorithm

机译：一种基于可变基于Windows的数值优化算法的新的超声弹性成像方法

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摘要

Quasi-static ultrasound elastography is a promising imaging method that analyzes motions from ultrasound images acquired with and without quasi-static forces. Window length is a key parameter for displacement and strain estimation in ultrasound elastography. Traditional methods with fixed windows cannot estimate displacements accurately in areas with uniform and sharp motions simultaneously. In this study, a new ultrasound elastography method based on a variable windows-based numerical optimization algorithm (VW-NOA) is proposed and evaluated using simulated data generated by finite element analysis software (COMSOL3.3). Compared to traditional methods, this proposed approach allows variable windows size based on wavelet analysis on coarse strains calculated by NOA. Thus, it produces fewer errors, especially for areas near boundaries that cross different elastic tissues. We use simulation and phantom experiments to evaluate the method and data and statistical analysis indicate that accuracy or contrast-to-noise ratio (CNR) was improved for VW-NOA compared to original NOA.
机译：准静态超声弹性造影是一种有希望的成像方法，其分析来自用诸如静态力获取的超声图像的运动。窗口长度是超声弹性术中位移和应变估计的关键参数。具有固定窗口的传统方法不能同时在具有均匀和尖锐运动的区域准确地估算位移。在本研究中，使用由有限元分析软件（COMSOL3.3）生成的模拟数据提出并评估了基于基于Windows的数值优化算法（VW-NOA）的新的超声弹性摄影方法。与传统方法相比，这种提出的方​​法允许基于NOA计算的粗菌株对小波分析的变量Windows大小。因此，它产生较少的误差，特别是对于交叉不同弹性组织的边界附近的区域。我们使用模拟和幻影实验来评估方法和数据，统计分析表明与原版NOA相比，VW-NOA的准确性或对比度率（CNR）得到改善。

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  • 来源
    《Sensing and imaging》 |2020年第1期|30.1-30.16|共16页
  • 作者

    Xinjian Zhu; Ruoyu Wu; Mingying Geng; Baoming Wu; Tao Li; Xiaochang Pan; Ke Liu; Qinghua He;

  • 作者单位

    The Fourth Affiliated Hospital Zhejiang University School of Medicine Yiwu 322000 China Research Institute of Surgery Army Medical University Chongqing 400042 China;

    Research Institute of Surgery Army Medical University Chongqing 400042 China;

    Research Institute of Surgery Army Medical University Chongqing 400042 China;

    The Fourth Affiliated Hospital Zhejiang University School of Medicine Yiwu 322000 China Research Institute of Surgery Army Medical University Chongqing 400042 China;

    Research Institute of Surgery Army Medical University Chongqing 400042 China;

    Department of Biomedical Engineering School of Medicine Tsinghua University Beijing 100084 China;

    Department of Biomedical Engineering School of Medicine Tsinghua University Beijing 100084 China;

    Research Institute of Surgery Army Medical University Chongqing 400042 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Variable windows; Numerical optimization algorithm; Ultrasound elastography; Wavelet;

    机译：可变窗口;数值优化算法;超声弹性成像;小波;

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